Home / 81,581.66-122,372.48-28,993.22

Finding the Fourth Proportional to 81,581.66, 122,372.48 and 28,993.22

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Solution

The fourth proportional to 81,581.66, 122,372.48 and 28,993.22 is: 43,489.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,581.66 : 122,372.48 = 28,993.22 : x
  2. Step 2: Convert to fraction form
    81,581.66/122,372.48 = 28,993.22/x
  3. Step 3: Cross multiply
    81,581.66x = 122,372.48 × 28,993.22
  4. Step 4: Simplify right side
    81,581.66x = 3,547,972,234.59
  5. Step 5: Solve for x
    x = 3,547,972,234.59/81,581.66
  6. Step 6: Final answer
    x = 43,489.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.